Mammal
Badger
The striped night-digger of British woodlands
Animals that start with B
There are 46 animals that start with the letter B, including the Badger, Bald Eagle, Ball Python, and more. See photos, facts, and full guides for each.
Bird
Bald Eagle
The fish-hunting raptor and national bird of the United States
Reptile
Ball Python
The gentle constrictor that curls into a ball
Mammal
Banded Mongoose
The cobra's agile rival
Bird
Barn Owl
The ghostly, heart-faced night hunter
Bird
Barn Swallow
Fork-tailed aerial insectivore of farms
Fish
Basking Shark
Second-largest fish; gentle plankton feeder
Mammal
Bat
The only mammals capable of true flight
Mammal
Bat-eared Fox
Huge-eared fox that listens for insects
Reptile
Bearded Dragon
The friendly desert lizard and favorite pet reptile
Insect
Bed Bug
The blood-feeding pest of mattresses worldwide
Mammal
Beluga Whale
The white whale of the Arctic
Fish
Betta
Labyrinth fish famous for vivid fins
Fish
Betta Fish
The colorful fighter of Southeast Asian waters
Mammal
Bighorn Sheep
Mountain sheep with massive curling horns
Reptile
Black Mamba
Africa's fast and feared elapid snake
Mammal
Black Rhinoceros
Africa's hook-lipped browser in crisis
Invertebrate
Black Widow
Venomous cobweb spider with a red hourglass
Invertebrate
Black Widow Spider
The glossy black spider with the red hourglass
Mammal
Black-tailed Prairie Dog
The keystone burrower of the plains
Bird
Blackbird
The glossy garden thrush with a golden song
Mammal
Blackbuck
Spirally horned antelope of the Indian plains
Invertebrate
Blacklegged Tick
The Lyme disease vector of eastern forests
Fish
Blobfish
The deep-sea fish that only looks like a blob out of water
Invertebrate
Blue Crab
The swift swimming crab of Atlantic estuaries
Bird
Blue Jay
The bold, noisy blue songbird of North America
Fish
Blue Tang
The bright blue reef fish from Finding Nemo
Bird
Blue Tit
Acrobatic garden tit of Europe
Mammal
Blue Whale
The largest animal that has ever lived
Bird
Blue-footed Booby
Plunge-diving seabird with vivid blue feet
Reptile
Blue-tongued Skink
Stocky Australian skink with a blue tongue
Reptile
Boa Constrictor
The powerful constricting snake of the Americas
Mammal
Bobcat
North America's adaptable wild cat
Fish
Bonnethead
Seagrass-munching hammerhead of warm shallows
Mammal
Bonobo
The peaceful ape of the Congo Basin
Reptile
Boomslang
Arboreal African snake with potent venom
Mammal
Bottlenose Dolphin
One of the ocean's most intelligent animals
Invertebrate
Box Jellyfish
Cube-shaped killer of Australian shallows
Invertebrate
Brittle Star
Arm-dropping filter feeder of Atlantic gravel
Mammal
Brown Bear
The widespread bear of the Northern Hemisphere
Mammal
Brown Lemming
The tundra rodent of myth
Bird
Brown Pelican
The plunge-diving fisher
Invertebrate
Brown Recluse Spider
The violin-marked spider of the American South
Bird
Budgerigar
The little Australian parakeet and world's most popular pet bird
Fish
Bull Shark
The shark that swims into freshwater
Insect
Bumblebee
The fuzzy, hard-working pollinator of meadows and gardens
Animals that start with B: FAQs
What animals start with the letter B?
Animals beginning with B include Badger, Bald Eagle, Ball Python, Banded Mongoose, Barn Owl, and 41 more.
How many animals begin with B?
Our guide currently covers 46 animals whose names start with B.